Noun chrosomal abnormality has 1 sense
  1. chromosomal aberration, chromosomal anomaly, chrosomal abnormality, chromosonal disorder - any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities
    --1 is a kind of aberrance, aberrancy, aberration, deviance
    --1 has particulars: monosomy; trisomy; sex-linked disorder
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